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Fonds consists of 45 glass-plate lantern slides featuring scenes from Osterhout's work with B.C. First Nations, including Haida, Tsimshian and Kwakwaka'wakw. Images document First Nations individuals, communities, totem poles and landscapes of British Columbia.

This subseries contains records relating to an exhibit built at the Canadian Museum of Civilization. McLennan was the project manager and design developer for this project. He oversaw the completion and installation of six west coast First Nation house designs: Coast Salish, Haida, Tsimshian, Bella Coola, Oweekeno, and Kwakwaka'wakw. The records include newspaper clippings, correspondence, photographs, and notes.

File contains images of Tsimshian artifacts housed in museums in British Columbia and in what is now known as the Canadian Museum of History. The file also contains images of Tsimshian villages along the Nass River, and historical photos of Tsimshian peoples.

File contains historical photographs of Gitxsan villages, with a specific focus on totem poles and various buildings in the villages. There are also some images of the Gitxsan people in regalia. The textual records contain information to some of the photographs, listing the photograph's title and the museum and/or archive it originated from.

File mainly contains historical images of the Nisga'a villages, peoples, and of Nisga'a totem poles. Other images are of modern day Nisga'a totem poles housed in museums in Canada and the United States. The textual records contained in this file are catalogue cards which provide some of the photograph's context, providing information such as the location of the photograph, the people in the photographs, which museum and/or archive collection the image belongs to, and/or the image's catalogue number.